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Large Steam Cylinder.

19

prevent considerable wear as it travels along the plate. The
internal core is shown struck on the plate, and the opposite hand
having been made, these two are dried and laid aside. A larger

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template strikes out the patterns, right and left hand (the wooden
discs N serving as flanges), and these being dried, it is clear that
we now have two half loam patterns and two half cores; the
moulding, therefore, may take place in green sand in the usual